Recent content by TechTrend

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    1U Supermicro Server 6x 10GBE RJ45 X10SLH-LN6TF LGA 1150 H3 X10SLH-N6-ST031

    This auction lists a similar system, with case and motherboard but without heatsink or rails. Seller is asking $125 OBO with free shipping. SuperMicro 1U, Single-Socket, Barebones, NO CPU, NO HEATSINK - X10SLH | eBay
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    ZFS and VMFS6 Space Reclamation

    There is an option to disable VMFS6 automatic space reclamation from the vSphere web client, e.g. by selecting the datastore then Configure, General, Space Reclamation. See the attached screenshot. That helps with Solaris ZFS deployments that can't go back to VMFS5.
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    ZFS and VMFS6 Space Reclamation

    VAAI unmap is specific to iSCSI datastores, but other VAAI primitives and hardware acceleration also apply to NFS datastores. https://www.vmware.com/content/dam/digitalmarketing/vmware/en/pdf/techpaper/vmware-nfs-best-practices-white-paper-en-new.pdf Hardware Acceleration on NAS Devices...
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    ZFS and VMFS6 Space Reclamation

    Contacted VMware Support on this issue. It turns out that the degradation is partly due to using a storage server that does not support VAAI unmap and partly due to a VMware bug. VMFS space reclamation is implemented using VAAI unmap. It will not work with storage servers that don't implement...
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    ZFS and VMFS6 Space Reclamation

    VMware implemented a new file system type VMFS6 available with ESXi 6.5 and 6.7. One of its new features is automatic space reclamation. Space Reclamation Requests from VMFS Datastores The default setting on new datastores with VMFS6 is a reclamation priority of "Low" with maximum bandwidth of...
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    cheap Supermicro 836 chassis $135+S&H

    Thanks for the clarification. It has been on my watch list for a week or so, but I didn't get the offer.
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    cheap Supermicro 836 chassis $135+S&H

    Is that a public offer or is it targeted?
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    Intel Optane SSD 900P 280GB AIC $235 + YMMV 13% bucks

    NewEgg via eBay has a 15% discount on several items, including this Intel Optane 900P AIC. Regularly listed at $276.46, it drops to $234.99 when added to a cart. @gea has a great post on how Optane SSDs as Slogs improve write performance on Solaris/OmniOS ZFS. Intel Optane SSD 900P Series -...
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    Occasional OmniOS iSCSI disconnect from VMware

    Gea, Thanks for your suggestions. There are ten HGST He8 8TB SATA drives on a mirrored (RAID10) pool. Looked at %w and %b on iostat for several iterations, but didn't see significant differences. # iostat -xn 1 2 extended device statistics r/s w/s kr/s kw/s wait...
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    Occasional OmniOS iSCSI disconnect from VMware

    I use a VM with OmniOS r151024ap and napp-it v. 18.01b as a storage server for a VMware 6.0u3 cluster. Around 30 VMs use 8 iSCSI LUNs for storage. It is mostly very stable, but about twice a year the storage VM stops responding to iSCSI requests from ESXi hosts. After an incident, vmkernel log...
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    Supermicro 836 + Rails, NIB 115+ shipping

    Seller raised price to $215 w/free shipping.
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    Supermicro X9DRD 1U chassis 126 USD

    Seller listed the motherboards for $72 OBO FS. First 10 sales were best offers so they are available for less. Very reasonable for a SuperMicro X9 dual Xeon LGA 2011. X9DRD-LF-TW008 SUPERMICRO DUAL INTEL LGA2011 SUPPORTS INTEL XEON E5-2600, C602 | eBay Note that only one expansion slot (PCIe...
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    Mellanox ConnectX-3 Pro Dual port 10GbE $54USD BO + shipping

    IBM 00RX859 cards can be used with Intel servers. They work well with VMware ESXi 6 and the VMware Mellanox drivers. I have not tried flashing stock Mellanox firmware, but the Mellanox web site has firmware for those IBM cards. Their last update is 2.36.5000 from Oct-2016...
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    Blade Network RackSwitch G8000F 48 Port Switch w/ 10GbE Uplink Module - 84.99 OBO + shipping

    @PnoT Thanks for the clarifications. I didn't see 7.1.13 yesterday. Some time ago a (free) IBM login was required for firmware downloads. Apparently it is no longer required. Wonder how much longer IBM will keep updating firmware of a product line they sold to Lenovo.
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    Blade Network RackSwitch G8000F 48 Port Switch w/ 10GbE Uplink Module - 84.99 OBO + shipping

    I don't have a maintenance contract. Just a free login at IBM Support. It allows me to download firmware for their BNT (Blade Network Technologies) switches (G8000, G8124, ...). The last G8000 firmware at the IBM support site seems to be 7.1.5 dated 10/22/2013. Lenovo support redirects to the...